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General

NameVivo X21iSamsung Galaxy A31-
ModelX21iGalaxy A31-
Price-Tk 18,000-

Network

Network TypeGSM / CDMA / HSPA / LTEGSM / HSPA / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMAGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-
Network 3GHSDPA 850 / 900 / 2100HSDPA 850 / 900 / 1900 / 2100-
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)LTE (unspecified)-
Network SpeedHSPA, LTEHSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 400/50 Mbps-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeSuper AMOLED capacitive touchscreen, 16M ColorsSuper AMOLED capacitive touchscreen, 16M colors-
Display Size6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio6.4 inches, 16.26 cm-
Display Resolution1080 x 2280 pixels, 19:9 ratio1080 x 2340 pixels-
Display MultitouchYes - Funtouch OS 4.0Yes-
Display Density402 ppi density--

Camera

Primary Camera12MP (f/1.8, 1/2.564 MP f/1.8
8 MP f/2.2
5 MP f/2.2
5 MP f/2.4
-
Secondary Camera24MP32 MP-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaLED flash, panorama, HDR-
Video[email protected][email protected]-

Body

Body Dimensions154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)159.2 x 75.1 x 8.9 mm-
Body Weight159 g (5.61 oz)--
Body ColorBlack, Aurora White, Ruby RedBlack, Blue, Red-

Launch

Launch AnnouncementMay, 2018Not announced yet-
Launch DateRelease May 19th, 2018Rumored-

Platform

Operating SystemAndroid 8.1 OreoAndroid 9.0 (Pie); One UI 2.0 -
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)Octa-core (1.8 GHz, Dual core, Cortex A73 + 1.6 GHz, Hexa-Core, Cortex A53)-
GPUMali-G72 MP3Mali-G71 MP2-
ChipsetMediatek MT6771 Helio P60Exynos 9611-

Memory

Memory Internal64GB, 128GB128 GB-
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot)microSD, up to 512 GB-
Ram4GB, 6GB 6 GB-

Battery

Battery TypeNon-removable Li-Ion BatteryNon-removable Li-Po-
Battery Capacity3425 mAh 6000 mAh-

Multimedia

Fm RadioYesYes-

Sound

AudioVibration, MP3, WAV RingtonesVibration, MP3, WAV ringtones-
LoudspeakerYesYes-
3.5mm JackYes - 32-bit/192kHz audio - Active noise cancellation with dedicated micYes Active noise cancellation with dedicated mic-

Connectivity

WiFiWi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, HotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot-
Bluetooth5.0, A2DP, LE5.0, A2DP, LE-
USBmicroUSB 2.0, USB On-The-Go2.0, Type-C 1.0 reversible connector-
GPSYes, with A-GPS, GLONASSYes, with A-GPS, GLONASS, BDS-

Features

SensorsFingerprint-rear-mounted, accelerometer, proximity, compassFingerprint, accelerometer, proximity, compass-
MessagingSMS(threaded view), MMS, Email, Push EmailSMS(threaded view), MMS, Email, IM-
BrowserHTML5HTML5-
JavaNoNo-

Other

Made ByChinaKorea-
Other FeaturesFast battery charging, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editor Color :Black, Blue, Red-